I have a stack of large banners that have printing on one side and are blank on the other, which used to be graphics for a 100"x100" trade show booth. They're heavy-duty flexible plastic, almost like vinyl, some are matt board, some are more like fiberglass; all are flexible and durable--varying sizes. A couple have slightly worn edges but most pieces are almost new.

They seem like they'd be great materials for making signs or for a burning man camp as the material is durable and easy to paint over.

They're in SOMA and you'll need to come get'm.

Email netdiva@gmail.com if you want them.